DeDietrich AFC 30 User Manual page 40

7. Troubleshooting
Code Faults
D05 OUTSI.S.FAIL.
D07 SYST.SENS.FAIL.
D09 DHW S.FAILURE
D11 ROOM S.A FAIL.
D12 ROOM S.B FAIL.
D13 ROOM S.C FAIL.
D14 MC COM.FAIL
D16 SWIM.B S.FAIL
SWIM.C S.FAIL
D17 DHW 2 S.FAIL
D18 ST.TANK S.FAIL
D19 SOL.COL.S.FAIL
D20 SOL COM.FAIL
39
Cause Description
of the
fault
SCU Outside temperature sensor fault
Remarks:
The boiler operates on BOILER
MAX temperature.
The valve setting is no longer
ensured but monitoring the
maximum temperature of the circuit
after the valve is ensured.
Valves may be manually operated.
Reheating the domestic hot water
remains ensured.
SCU System sensor fault
SCU Domestic hot water sensor fault
Remarks:
Heating of domestic hot water is no
longer ensured.
The load pump operates.
The load temperature of the dhw
tank is the same as the boiler.
SCU A room temperature sensor fault
B room temperature sensor fault
C room temperature sensor fault
Note:
The circuit concerned operates
without any influence from the room
sensor.
SCU Communication failure between the
SCU PCB and the boiler radio
module
SCU Swimming pool sensor fault circuit
B
Swimming pool sensor fault circuit
C
Note:
Swimming pool reheating is always
done during the circuit's comfort
period.
SCU Sensor fault tank 2
SCU Solar tank sensor fault
SCU Header sensor fault
SCU
Switch the boiler off and switch back on
4
Contact the professional who takes care of maintenance of the appliance
4
AFC 18 - AFC 24 - AFC 30
Checking / solution
Bad connection
Sensor fault
Contact the professional who takes care of
4
maintenance of the appliance
Bad connection
Sensor fault
Contact the professional who takes care of
4
maintenance of the appliance
Bad connection
Sensor fault
Contact the professional who takes care of
4
maintenance of the appliance
Bad connection
Sensor fault
Contact the professional who takes care of
4
maintenance of the appliance
Bad connection
Check the link and the connectors
4
Boiler module failure
Change the boiler module
4
Bad connection
Sensor fault
Contact the professional who takes care of
4
maintenance of the appliance
Bad connection.
Sensor fault.
Contact the professional who takes care of
4
maintenance of the appliance
Bad connection.
Sensor fault.
Contact the professional who takes care of
4
maintenance of the appliance
Bad connection.
Sensor fault.
Contact the professional who takes care of
4
maintenance of the appliance
15/07/2015 - 300026440-05